Governor for internal combustion engines



`lune 29, `1943.I

M. MALLORY GO`VERN`OR FOR INTERNAL COMBUSTION ENGINES Filed sept'. 18, 1942 linternal combustion. engine.

. end of lever 1.

Patented `lune 29, 1943 UNITED STATES PATENT j; orillcia:

GOVERNOR FOR INTERNAL COMBUSTION ENGINES Marion Mallory, miniemen. D y l `Applicativi september 18,1942, serial No. 45u34 Ae claims. (oi'. 12a-10s) This invention relates to a governor for an It is 'the object of the invention to produce a `governor for an internal combustion engine which will operate eiiliciently and smoothly to govern the operation -of the engine at any predetermined given speed.

The invention also contemplates a governor which is ofv simple construction and cheap to manufacture.

In the drawing t, ,J

Fig. 1 is an elevational view partly showing my governor.

in section Fig. 2 is a section along the line 2-2 of, Fig. 1.

shaft 2| which, as,\a.vmatter oi' convenience, .is

the distributor shaft of the ignition system for the internal combustion engine.' Shaft 2| rotates in accordance with thespeed of the engine.

-A `valve housing 22 is fixed on shaft 2|; A centrifugally operated valve 22 is reciprocably mounted within housing 22. Shaft 2| is journailed in bushings 24 and 2,5 within the dise .tributor housing 25.

Bushings 24 andv 25 are spaced from each other asat21to form a cir.

cumferential passagewayi which communicates l with conduit v,22 as at 22. Shaft 2| is provided lwith a diametrical passageway 29 which comthere is shown a governor housing I which.is

adapted for insertion in the intake manifold on the engine side of the carburetor. 'Ihe housing thus becomes'apart of the intake passageway and is provided with an inlet 2 and an outlet 2 for the fuel mixture'.

The governor valve 4, which controls the passageway through the housing, |,`is a butterfly valve of the velocity type and is mounted on the shaft 5 which is journalled in the housing. Valve 4 is unbalanced, thatis, the area of the 1valve above or to the iight of shaft 5 is greater than the area oi the portion of the valve below or to the left of this shaft, so `that the charge flowingv through the housing tends to close the' same.

A-crank 5 is fixed on the shaft 5 outside the housing 2. -A lever I is pivoted as at 2 on lug 9 of the housing 2. A tension springii has one end connected to crank B as at and the other end connected to lever 'I intermediate its'ends as at AI2. Housing .2 is provided with a cylinder I2 which communicates with the intake passage'- way through orifice I4. Piston I5 is reciprocably mounted in cylinder I2. `Compression spring VI5 is mounted'within the cylinder between the inner end thereof and piston I5 and. tends at all times to move piston I5 toward the right.' Pistcn |5 has a lugi which contacts the free Cylinder I2 communicates through orice I4 with the intake manifold on the engine side of governor valve 4 when closed. The interior .of cylinderl I2 also communicates with orifice Il on Valve.

The centrifugal valve mechanism comprises a municates at all times with the passageway 21'. Shaft 2| is `,also provided with passageway 20 whichcommunicates at one endwith the in-` Y,

terior of housing 22 vand at the other end with passageway 25. z

Housing 22 communicates with atmosphere through orifice 3| in Vthe housing 22 and port 22 in the distributor housing 22. Valve 22 is providedwith a groove 22 to t communication i between passageway2i| and port 2|. Valve 22 is normally held openby tension spring 24, -one end ofwhich is connected to valve 22 and the -other end of which is'connected to block 25.

Block 25 is slidably but non-rotatably mounted inv a bore 25 of housing 22, An adjusting -screw 37 is carried by housing 22 and screws into block 25 so `that turning of the screw moves block 25 in and out to adjust the tension of spring 24.

The operation ofthe'deviceis as follows: The Y o velocity of the fuel charge flowing into the engine through housing tends to close the unbalanced valve 4. vAs long-as the engine is operating below its governedspeed, cylinder |2 is bled toatmosphere through conduit 2l, passageways 22, 20, 22, 2| and 22; As long as cylinder I2 is' air bled to atmosphere the pressure within cylinder I2 will be atmospheric so that there will be no power on piston I5 tending to move the same toward the left, and consequently spring I2 will hold the piston I5 outwardly or toward the right closed, avacuum will be created in cylinder -|2.l

`or under sumcient against arm "l thereby keeping spring Il tight tension to'hold governor valve 4 open.

As soon as the engine reaches a predetermined speed the centrifugally controlled valve 22 will close, thereby closing port 2| and closing .conduit 22 from atmosphere. As soon as orlce 2| is This vacuum is induced by the' velocity of the air flowingby orifices I 2 and i4. As the vacuum increases in cylinder'|2, piston I5 Vwillvmove toward the'leit compressing the ring |5 and remounted in said passa;

' lieving or decreasing the tension on spring I0, thus" allowing the velocity of the charge flowing through .the governorhousingand the manifold vacuum to close the valve 4. The engine is now running under governed speed and orice I8 will act as .an air bleed to cylinder I3, thereby blending down the vacuum induced in cylinder I3 through cringe I4. Thus; the full manifold. vacuum is not imposed upon piston. Ii'in cylinder I3 even 'when valve 2l is, closed. AThis feature causes the va ve l to close-smoothly when the air bleed to atmosphere is closed as the engine scares now through the intake passageway tends to close the said valve, .a spring connected to said valve tending to hold the same open, a suction device,

- 'a conduit connecting the suction device into the intake passageway on the engine side o! the sovernorvalve, another conduit connecting the suc.. tion device atmosphere, a connection between said suction d vice and said spring whereby as speed reaches the predeterminednontrolled speed and when,`due to the increased load on the engine, the engine speed starts decreasing this same feature causes the valve l to open smoothly and immediately as the speed declines to give more charge to the engine and maintain engine speed without surging.

It load is now applied 'to the engineP causing the same to slow down', the centrifugal valvewill the pressure rises in-said suction device the force of said spring tending to hold the governor valve open increases, a valve controlled in accordance with the speed of .the engine for closing said' second conduit to atmosphere at a predetermined speed whereby the pressure in said suction device falls thereby decreasing the 'force of said spring and the governor valve moves towards closed position.

4, In an internal combustion engine having an' intake passageway, an unbalanced governor valve mounted in said passageway so that the iluid ow .through the intake passageway tends to close he said valve, a spring connected to. said valve Itending, to hold the same open, a suction device.

c a conduit connecting the suction device into the flow through theintake passageway tends to close the said, valve, resilient means connected to said valve tending to hold the same open, a

suction device. a conduit connecting 'the suction device into the intake passageway on the engine intake passageway `on the engineside o! the governor valve, a second conduit connecting said suction device to the intake Vpassagewayfon the atmosphere side of said governorvalve, a third conduit connecting the suction device to atmosafvaive controlled `in accordance with the speed of the engine for closing said V third conduit to atmospherey at a predetermined speed whereby A the'now of fluid` through said passageway by the ya valve controlled in accordance with the speedH of the engine for closing said second conduit to l atmosphere at a predetermined speed whereby the pressure in said suction device-falls thereby decreasing the force of said `resilient `means and the governor Ivalve moves towards closed position.

, 2. In an internal combustion engine having an intake passageway, an. unbalanced governorvalve y l eway so that the iluidxlow 'through the intake passageway. tends to close the said valve, resilient means connected to said valve tending to hold the same open; a suction device. 'a

, conduit connecting the suction "device into' the intake passagewayon .the engine `side of the governor valve, a second conduit connecting said suction device to the intake away on the.

' atmosphere side 'of said-'governor valve. a thirdl conduit connecting the suction-device to atmosphere, a connection between said suction device v and said resilient means wherebygs the e rises in said suction device the force o!! said resilient means tending to hold the governorvalve openincreases, a valve controlled-in accordance with the speed of the engine `l'or closing said third `conduit to atmosphere at a predetermined speed whereby the ilow of iluid through said esway by the mst and 'second condmts .produces a vacuum irfsaid suction device kthereby decreasing the force of said resilient means and; the governor valvem'oves towards closed position."

t 3. In an'internalcombustionnsine having an intake passageway, an unbalanced governor valve mounted in s'aid passageway Aso that the Quid wards closed position.

first and second conduits produces a vacuum in .said suction device thereby decreasing the torce,

of said spring and the governor valve moves to- -5. In an internal combustion engine having an 'intake'passagewam an unbalanced governor valve' the other to said valve whereby the spring tends to hold the valve open, a suctionl vice, a conduit connecting the suction device into the intake passageway on the engine side of the governor valve,

another conduit` connecting lthe suction device to atmosphere, a connection between said suction device and. saidlever whereby as the pressure rises in said suction device the lever is swung f to increase the tension ot said spring, a valve controlled in accordance with the speed of the engine for closing said second conduit to atmosand the governor valve moves toward closed posi- 6. In an internal combustion engine having an intake passageway, ari-unbalanced sovemor valve -mounted in said eway so that the iluid tion device, a conduit connecting the suction delvice into the intake'passageway` on the' atmosthe other end of which is connected to the lever. said spring tending to-hold-the valve open, a sucphere side of the overnor valve, a second conduit connecting e suctiondevice into the in;A

take passageway on the engine side of the go ernor valvefa third conduit connecting the suction device to atmosphere, a connection between said suction device and said lever whereby as the pressure rises in said suction device the forcev oi' said spring tending to hold the governor valve open increases. a valve controlled in accordance with the speed of the engine for closing said third 3 conduit to atmosphere at a predetermined speed whereby the flow of fluid by the rst and second conduits creates a vvacu'um in said suction device to permit the Alever to swing about its pivot and decrease the tension of the said spring and the l governor valve moves toward closed position.

MARION MALLoRY. 

